SMS: Client May Not Accelerate When You Uninstall the Remote Control Feature (310508)

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

SYMPTOMS

When you uninstall and then reinstall the Systems Management Server (SMS) 2.0 Remote Control feature on either a Microsoft Windows 2000-based or Microsoft Windows XP-based client computer, the clients may not be accelerated. You can determine that this is the problem that you are experiencing if you click Show Status in the Remote Control tool in Control Panel.

CAUSE

This problem occurs because the SMS Remote Control Uninstall program (Rcunist.exe), changes the Start value from 3 to 4 in the following registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Idisw2km

When this occurs, the Microsoft SMS Mirror driver (Idisw2km) is disabled. When you reinstall the Remote Control feature, Windows detects that Idisw2km is installed but does not verify that it is disabled.

WORKAROUND

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To resolve this problem, obtain the latest service pack for Systems Management Server version 2.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

288239 SMS: How to Obtain the Latest Systems Management Server 2.0 Service Pack

To work around this problem:

Start Registry Editor (Regedt32.exe).
Locate and click the Start value in the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Idisw2km
On the Edit menu, click DWORD, type 3, and then click OK.
Quit Registry Editor.
Restart the computer.

NOTE: Use these steps only if you experience the problem that is described in the Symptoms section. If you uninstall and then reinstall the client again, you must repeat these steps.

MORE INFORMATION

The problem that is described in the Symptoms section does not occur if you use the Repair Installation feature in the Systems Management tool in Control Panel. When you use the Repair Installation feature, Rcuninst.exe does not run.

Support for Windows 2000 and Windows XP Remote Control acceleration is available for versions of SMS that are later than SMS 2.0 Service Pack 3 (SP3). For more information, view the following Microsoft Knowledge Base article:

264884 SMS: Windows 2000 Client Video Cannot Be Accelerated During a Remote Control Session